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Coupling Nominal Power kW Rating @ standard speeds rpmSize Torque kW

Nm /100 rpm 720 960 1440 2880

HRC70 31.5 0.33 2.37 3.17 4.75 9.5

HRC90 80 0.84 6.03 8.04 12.1 24.1

HRC110 160 1.68 12.1 16.1 24.1 48.3

HRC130 315 3.3 23.8 31.7 47.5 95

HRC150 600 6.28 45.2 60.3 90.5 181HRC180 950 9.95 71.6 95.5 143 286

HRC230 2000 20.9 151 201 302 -

Ratings

MKM TaperBush Spider CouplingsMKM HRC Couplings facilitate easy installation with no machining of hubs with

minimal maintenance and no lubrication.

(Note: For speeds below 500 rpm — select on rated torque)

MKM HRCKM HRC COUPLINGS

SelectionA Select the appropriate service factor (SF) from

Chart No 2.

B Design Power: Multiply running power of driven

machinery by the SF. This gives the design power that

is used for coupling selection.

C Coupling Size: Refer to the Ratings Chart above, read

down from the appropriate speed until a power greaterthan the Design Power is found. The coupling is given

at the left

D Check that the coupling selected can accommodate

the larger of the shaft diameters.

E When actual load is unknown, select a coupling with

“equiv. shaft dia”. the same or greater than the

smaller shaft - providing both shafts are mild steel.

E For high inertia, stalling or braking torques greater

than twice the catalogued rating, select a coupling

rated no less than:

Max. Drive Torque

2

F For multi-cylinder internal combustion engines:

Add 1.0 to SF

G For single-cylinder internal combustion engines:

Add 2.0 to SF

H Drives subject to torsional vibration must be referred

to MKM Engineers.

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Specifications and illustrations aresubject to revision without notice.

AUCKLAND HAMILTON WELLINGTON CHRISTCHURCH(09) 571 0189 (07) 846 0938 (04) 566 6129 (03) 343 3911

email: sales@maudkirk.co.nz website: www.maudkirk.co.nz

Dimensions

Even Load SF = 1.0AGITATORS - constant densityCOMPRESSORS - rotary - uniform loadCONVEYORS - apron belt/screw-uniform loadDYNAMOMETERS - uniform loadFANS - centrifugal - light dutyGENERATORS - uniform loadPUMPS - centrifugal - uniform loadSCREENS - airwashing/water (bar type)

Fluctuating Load SF =1.5AGITATOR - variable density - liquid and solidCOMPRESSOR - rotary - fluctuating loadCONVEYORS - apron/belt/screw-fluctuating loadCRANES/HOISTS - light dutyDRYERS/COOLERS - rotary typeDYNAMOMETERS - fluctuating loadELEVATORS - belt/bucketFANS - centrifugalFOOD INDUSTRY - filling machines

GENERATORS - fluctuating load i.e. hoistsKILNS - small-mediumMACHINE TOOLS - light dutyPRESS - printingPUMPS - centrifugal/geared rotarySCREENS - rotary trommelTEXTILE INDUSTRY - general

TIMBER INDUSTRy - woodworking machines

Heavy Shock Load SF = 3.0COMPRESSORS - single cylinderCONVEYORS - reciprocating/vibrating/live

roll/shackingCRANES/HOISTS - heavy dutyCRUSHERS - crushing and grinding millsDRILLING RIGS

MACHINE TOOLS - croppers/shears/notching andpunching presses

MINING INDUSTRYPUMPS - plunger - single cylinderRUBBER INDUSTRY - crackers/mills/mixersSCREENS - oscillating/vibratingSTEEL INDUSTRYSUGAR INDUSTRY - cane shreddersWINCHES/WINDERS - heavy duty

Shock Load SF = 2.0AGITATORS - large solidsCALENDERS/ CENTRIFUGES/ COMPRESSORS - lobe/multi-cylinderCONVEYORS - apron/shuttleCRANES/HOISTS - medium dutyCRUSHERS - sugar IndustryEXTRUDER/INJECTORFANS - forced/Induced draft cooling

towerGENERATOR - heavy load i.e. welders/cranesKILNS - large - heavy dutyMACHINE TOOLS - guillotines/forming pressesMIXERS - concretePRESSES - briquette/forming/punching

PUMPS - plunger/multi-cylinder/  reciprocating/vane/lobe

SAWS - circular/gangSUGAR INDUSTRY - crushing rollsTIMBER INDUSTRY - sawmill equipmentTUMBLERSWASHERS

WINCHES/WINDERS

Service factors Chart No.2

C

      Ø

      A

      Ø

      B

      Ø

      E

D

C

      Ø

      A

      Ø

      B

F J

Assembled Length InsertRemoval

Assembled Length

L

D G

H FlangeF Flange

Bush Max Misalignment Dimensions Insert WeightCoupling Size Bore RemovalSize Parallel Axial

mm in mm mm mm mm kgA B C D E F G L J

HRC70 1008 25 1" 0.3 +0.2 69 60 20.0 23.5 31.0 25.0 18 65 29 1.0

HRC90 1108 28 11 / 8" 0.3 +0.5 85 70 19.5 23.5 32.0 30.5 22.5 69.5 29 1.2

HRC110 1610 42 15 / 8" 0.3 +0.6 112 100 18.5 26.5 45 45 29 82 38 5.0

HRC130 1610 42 15 / 8" 0.4 +0.8 130 105 18.0 26.5 50 53 36 89 38 5.5

HRC150 2012 50 2" 0.4 +0.9 150 115 23.5 33.5 62 60 40 107 42 7.1

HRC180 2517 60 21 / 2" 0.4 +1.1 180 125 34.5 46.5 77 73 49 142 48 16.5

HRC230 3020 75 3" 0.5 +1.3 225 155 39.5 52.5 99 85.3 59.5 164.5 55 26.0

All HRC elements have an angular misalignment capacity of up to 1 degree.

Bore limits H7 tolerance.